Method of packaging food products.



l. MNBCHOWSKY & F. GUTMANN. METHOD OF PACKAGING FOOD PRODUCTS. M'PLICATION mw mm. 31. me. asazww 15.21.1918.

1,281,578. Patented Oct 15, 1918.

fl vvu M Mm WNBSSES INVENTORS BY w W M WRNEYW UNITED STATES PATENT OFFICE.

JOHN JANUCHOWSKY, OF ST. LOUIS, MISSOURI, AND FERDINAND GUTMANN. OF BROOK- LYN, NEW YORK, ASSIGNORS TO JAM PERFECTO BOTTLE CAP CO. INC., OF NEW YORK, n. Y., A ooaronn'rron or new roan.

METHOD OF PACKAGING FOOD PRODUCTS.

Specification of Letters Patent.

Patented Oct. 15, 1918.

Application filed larch 31, 1916, Serial No. 88,122. Renewed August 21, 1918. Serial No. 250.892.

To all whom it may concern:

Be it known that we, J OHN JANUcHoWsKY and FERDINAND GUTMANN, citizens of United States, residing, respectively, in the city and county of St. Louis, in the State of Missouri, and the borough of Brooklyn, city of New York, county of Kings, and State of New York, have invented new and useful Improvements in Methods of Packagio ing Food Products, of which the following is a specification.

In the drawing Figure 1 is a View of a cap used in carrying out our method and Fig. 2 a sectional View of the cap on an ordinary milk bottle.

The cap shown has a top 1, a smooth side Wall 2 and a flaring edge 3 which affords a grip for the removing tool.

In use the cap is placed on a bottle l and the smooth side wall is drawn into intimate contact with the glass lip 5 over a considen able area forming a normally tight joint.

Our invention relates to methods of packaging food products which are intended for quick consumption but which require protection during transit and which are pasteurized after being placed in the container and closed and our objects are the practice of a method which will be cheap with rese spect to the materials employed, simple as to the steps involved and certain as to the protection secured.

We will describe the method as applied to milk although it is obvious that it may be used in connection with other food products.

As it is one of our objects to keep the cost as low as pomible we have used our method in connection with the ordinary milk bottle of commerce, that is without a specially formed lip to engage the cap. The cap is of the general type disclosed with the paper lining or sealing gasket entirely omitted using only the unlined metal shell as it has the 7 been found that a paper lining becomes soaked and imparts a disagreeable odor and taste to the milk and also adheres to the bottle lip. The cap is coated inside thereby preventing direct contact of the contents with the metal.

In carrying out our method we fill the milk bottle nearly, but not quite full thereby leaving an air space after the bottle has been capped. The bottle is next closed with the cap as above described and the skirt is forced inward under the largest diameter of the bottle lip by any suitable capping machine which draws and smooths the metal into a contact with the glass which is water tight to the external pressure due to the atmosphere but not Water tight to the higher internal pressure developed by exansion of the contents. The filled, capped bottles are then placed in the pasteurizing tank and heated suiliciently to kill harmful, putrefactive bacteria, about 140 F. for twenty minutes in the case of milk. The contents naturally expand during heating and the trapped air escapes between the glass and the tin cap.

The bottles are then cooled, the joint between the glass and the cap being water tight to external pressure as before stated there is no ingress of Water during this operation and they are now removed from the pasteurizing tank for shipment.

By this method of packaging the contents are protected for a reasonable time from all contamination and the cap employed being sterile the contents of the receptacle remain so.

We claim The process of packaging food products consisting in partially filling a container. placing thereon a cap having a top, smooth side walls and a flaring lower edge but having neither lining nor sealing gasket therein, drawing said cap into intimate contact set our hands and seals in the presence of with the hp and upper edge portion of the two witnesses.

euntainer to form a joint therewith which JOHN JANUCHOVVSKY. ins. is watertight against normal atmospheric Witnesses as to Jannehowsky:

5 pressure externally applied, pasteurizing the G. Fnnnnmvx KLIN capped Container and contents to destroy' )AUL PRUEss. harmful bacteria during which process ex- T t H J "T panding air and gases are free to escape bell RRDIMXA D UUIMA) tween the container and cap and finally cool- Witnesses as to Gutmann:

10 ing the container and contents. CARL \V. STERN,

In testimony whereof we have hereunto UHAnLEs COHEN.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents. Washington, D. G. 

